Re: Laptop Connects to WAP, But Cannot Access 'Net [FIXED]

Rich,

The -z means if the string is empty, its the first one I found so I used 
it. I'm sure there is one for not empty, or maybe if you put ! -z it 
would negate it.

Best,

John

On 03/04/2012 21:26, Rich Shepard wrote:
> On Tue, 3 Apr 2012, John Crowhurst wrote:
>
>> Okay, modify the script. I'd suggest looking at what happens when you 
>> are connected and compare it to when you are not connected, perhaps 
>> something in iwconfig.
>
> John,
>
>   Very interesting results. A quick trip to the wifi hot spot taught 
> me that
> ip does not find RUNNING, but it does find UP, so that's the test to use.
>
>   However, while the script worked at the coffee shop, it did not 
> bring up
> the ethernet interface back here in the office. Testing taught me that 
> the
> conditional needs the results reversed. That is, if the 'if' is true, 
> bring
> eth0 down; if it's false, bring it up. At least, that brings up eth0 
> here;
> one more trip to the coffee shop (tomorrow; I need to get client work 
> done
> today) will confirm it's working there, too.
>
>> #!/bin/sh
>> test=`ip link show wlan0|grep UP`
>> if [ -z "$test" ]; then
>>   ifconfig eth0 down
>> else
>>   ifconfig eth0 up
>> fi
>
> Again, thanks for teaching me that ip exists and preparing the script,
>
> Rich
>
>
>
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